The PTT pocket temperature test probes measure surface or immersion temperatures in degrees Celsius or Fahrenheit. The TPP1 immersion probes and TPP2 surface-area probes measure from −50°C to 250°C ...
NASA’s InSight lander set its heat probe, called the Heat and Physical Properties Package (HP3), on the Martian surface on February 12. NASA/JPL-Caltech/DLR Having placed its seismometer onto the ...